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Mozilla developer Boris Zbarsky discovered that the debugger will work with some objects while bypassing XrayWrappers. This could lead to privilege escalation if the victim used the debugger to interact with a malicious page.

Security researcher Juho Nurminen reported that on Firefox for Android, when the addressbar has been scrolled off screen, an attacker can prevent it from rendering again through the use of script interacting DOM events. This allows an attacker to present a fake addressbar to the user, possibly leading to successful phishing attacks.

Using the Address Sanitizer tool, security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team found a use-after-free in the Text Track Manager while processing HTML video. This was caused by inconsistent garbage collection of Text Track Manager variables and results in a potentially exploitable crash.

Security researcher Ash reported an out of bounds read issue with Web Audio. This issue could allow for web content to trigger crashes that are potentially exploitable.

Firefox for Android includes a Crash Reporter which sends crash data to Mozilla for analysis. Security researcher Roee Hay reported that third party Android applications could launch the crash reporter with their own arguments. Normally applications cannot read the private files of another application, but this vulnerability allowed a malicious application to specify a local file in the Firefox p ...

Security researcher Nicolas Golubovic reported that the Content Security Policy (CSP) of data: documents was not saved as part of session restore. If an attacker convinced a victim to open a document from a data: URL injected onto a page, this can lead to a Cross-Site Scripting (XSS) attack. The target page may have a strict CSP that protects against this XSS attack, but if the attacker induces ...

Mozilla developer Jeff Gilbert discovered a mechanism where a malicious site with WebGL content could inject content from its context to that of another site"s WebGL context, causing the second site to replace textures and similar content. This cannot be used to steal data but could be used to render arbitrary content in these limited circumstances.

Security researcher Alex Infuhr reported that on Firefox for Android it is possible to open links to local files from web content by selecting Open Link in New Tab from the context menu using the file: protocol. The web content would have to know the precise location of a malicious local file in order to exploit this issue. This issue does not affect Firefox on non-Android systems.

Security researchers Tim Philipp Schafers and Sebastian Neef , the team of Internetwache.org, reported a mechanism using JavaScript onbeforeunload events with page navigation to prevent users from closing a malicious page"s tab and causing the browser to become unresponsive. This allows for a denial of service (DOS) attack due to resource consumption and blocks the ability of users to exit the a ...

Mozilla developer Ehsan Akhgari reported a spoofing attack where the permission prompt for a WebRTC session can appear to be from a different site than its actual originating site if a timed navigation occurs during the prompt generation. This allows an attacker to potentially gain access to the webcam or microphone by masquerading as another site and gaining user permission through spoofing.


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